chore: use gapic-generator-python 0.62.1
chore: use gapic-generator-python 0.62.1

fix: restore 100% coverage for generated clients

feat: adds REST server-streaming support

fix: add special method parameters to set of reserved module names

feat: expose extended operations annotations within generator

fix: resolve DuplicateCredentialArgs error when using credentials_file

committer: parthea
PiperOrigin-RevId: 425964861

googleapis/googleapis,googleapis/googleapis